What is the iupac name of ch3ch2ch3oh?

Answer 1

2-propanol. Or, just Propanol if you've stuck the OH group on the end. The hydrocarbon chain is 3 carbons, so the prefix is prop. There are only single bonds, so it's an alkane, and the -ol suffix is because of the OH functional group. If the OH group is in the middle, it's at position 2, so 2-propanol. Otherwise, you don't need a locant. It would also possibly be called N-Propanol.

Answer 2

IUPAC: 2-methyl-2-butanol

COMMON: tert-pentyl alcohol or t-amyl alcohol

Answer 3

butanoic acid.